A Study to Evaluate Microvessel Ultrasound Imaging of Wound Healing in Patients with Chronic Ulcers

Overview

Información sobre este estudio

The purpose of this study is to explore the application of high-resolution microvessel ultrasound imaging system to non-invasively monitor the process of wound healing, including measurements of microvessel density and microcirculation. Comparison will be made to skin biopsies at the edges of the ulcer to correlate microvessel ultrasound finidngs with angioplasia and fibrosis. Correlation will also be made to clinical assessment of treatment response and wound healing.

 

Elegibilidad para la participación

Los requisitos de elegibilidad de los participantes incluyen la edad, el sexo, el tipo y el estadio de la enfermedad, y los problemas de salud o tratamientos previos. Las pautas difieren de un estudio a otro e identifican quiénes pueden o no pueden participar. No hay garantía de que cada persona elegible que desee participar en un ensayo se inscribirá. Comunícate con el equipo del estudio para analizar la elegibilidad del estudio y la posible participación.

Inclusion Criteria:

- Chronic wound in the course of diabetic foot ulcers and/or lower extremity venous
ulcers with duration of at least 6 weeks and the wound surface not less than 2 sq. cm
and not greater than 15 sq. cm, without evidence of active infection of the wound at
the time of qualification to participate in the study
- Meets criteria for stalled chronic wound defined as less than 50% reduction in wound
size after 30 days of standard of care management.
- For chronic venous ulcers, ultrasound demonstrates venous reflux > 0.5 seconds
- Satisfactory blood glucose control - fasting not more than 110 mg%, HbA1c < 6.5%
- Satisfactory blood supply to the wound verified by the measurement of the oxygen level
of the foot tissue (TCPO2 > 30mmHg) in patients with neuropathic etiology of diabetic
foot syndrome
- In the case of the patients with the wounds of ischemic component, the condition for
qualification is a clinical improvement of the limb's blood supply as a result of the
revascularization procedure documented by ultrasound.
- Ankle-brachial index (ABI) ≥ 0.8

Exclusion Criteria:
- Acute wound with duration less than 6 weeks
- Evidence of active infection or on antibiotics
- Smoker
- For chronic venous ulcers, ultrasound demonstrates venous reflux < 0.5 seconds
- Unsatisfactory blood glucose control - fasting more than 110 mg%, HbA1c < 6.5%
- Poor blood supply to the wound verified by the measurement of the oxygen level of the
foot tissue (TCPO2 < 30mmHg) in patients with neuropathic etiology of diabetic foot
syndrome
- Ankle-brachial index (ABI) < 0.
- Pregnancy
- Known allergy to lidocaine

Note: Other protocol defined Inclusion/Exclusion Criteria may apply.

Eligibility last updated 2/21/2024. Questions regarding updates should be directed to the study team contact.

Sedes participantes de Mayo Clinic

Los estatus de los estudios cambian con frecuencia. Comunícate con el equipo del estudio para obtener la información más actualizada acerca de la posibilidad de participar.

Sede de Mayo Clinic Estatus Contacto

Rochester, Minn.

Investigador principal de Mayo Clinic

Michael Moynagh, M.B., B.Ch.

Cerrado; inscripción por invitación

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El estudio no está abierto para todos los que cumplen con los criterios de elegibilidad, sino solamente para las personas que el equipo del estudio ha invitado a participar.

Contact information:

Bobbie Ott

(507) 293-0922

Ott.Bobbie@mayo.edu

More information

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CLS-20547548

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